build: support CentOS Stream 9

Change-Id: I8864a856b4f777110cea37528d963e9eb77ed973
diff --git a/.jenkins.d/00-deps.sh b/.jenkins.d/00-deps.sh
index a287116..d3b16f9 100755
--- a/.jenkins.d/00-deps.sh
+++ b/.jenkins.d/00-deps.sh
@@ -42,4 +42,8 @@
             pip3 install --user --upgrade --upgrade-strategy=eager sphinx sphinxcontrib-doxylink
             ;;
     esac
+
+elif has CentOS $NODE_LABELS; then
+    sudo dnf -y install gcc-c++ libasan pkgconf-pkg-config python3 \
+                        boost-devel openssl-devel sqlite-devel
 fi
diff --git a/.jenkins.d/01-ndn-cxx.sh b/.jenkins.d/01-ndn-cxx.sh
index 4e0e154..5da6d35 100755
--- a/.jenkins.d/01-ndn-cxx.sh
+++ b/.jenkins.d/01-ndn-cxx.sh
@@ -35,19 +35,14 @@
 
 pushd ndn-cxx >/dev/null
 
-if has CentOS-8 $NODE_LABELS; then
-    # https://bugzilla.redhat.com/show_bug.cgi?id=1721553
-    PCH="--without-pch"
-fi
-
-./waf --color=yes configure --disable-static --enable-shared --without-osx-keychain $PCH
+./waf --color=yes configure --disable-static --enable-shared --without-osx-keychain
 ./waf --color=yes build -j$WAF_JOBS
 sudo_preserve_env PATH -- ./waf --color=yes install
 
 popd >/dev/null
 popd >/dev/null
 
-if has CentOS-8 $NODE_LABELS; then
+if has CentOS $NODE_LABELS; then
     sudo tee /etc/ld.so.conf.d/ndn.conf >/dev/null <<< /usr/local/lib64
 fi
 if has Linux $NODE_LABELS; then
diff --git a/.jenkins.d/10-build.sh b/.jenkins.d/10-build.sh
index 692ad2f..23c2987 100755
--- a/.jenkins.d/10-build.sh
+++ b/.jenkins.d/10-build.sh
@@ -36,6 +36,9 @@
 # Install
 sudo_preserve_env PATH -- ./waf --color=yes install
 
+if has CentOS $NODE_LABELS; then
+    sudo tee /etc/ld.so.conf.d/ndn.conf >/dev/null <<< /usr/local/lib64
+fi
 if has Linux $NODE_LABELS; then
     sudo ldconfig
 fi
diff --git a/.jenkins.d/20-tests.sh b/.jenkins.d/20-tests.sh
index 455c8f7..81c00b1 100755
--- a/.jenkins.d/20-tests.sh
+++ b/.jenkins.d/20-tests.sh
@@ -3,7 +3,6 @@
 
 # Prepare environment
 rm -rf ~/.ndn
-ndnsec key-gen "/tmp/jenkins/$NODE_NAME" | ndnsec cert-install -
 
 # https://github.com/google/sanitizers/wiki/AddressSanitizerFlags
 ASAN_OPTIONS="color=always"
diff --git a/.jenkins.d/40-headers-check.sh b/.jenkins.d/40-headers-check.sh
index 369eba3..da13efa 100755
--- a/.jenkins.d/40-headers-check.sh
+++ b/.jenkins.d/40-headers-check.sh
@@ -6,20 +6,21 @@
 # (similar to running all test cases), instead of failing at the first error.
 
 PROJ=PSync
+PCFILE=PSync
 
 if [[ -n $DISABLE_HEADERS_CHECK ]]; then
   echo 'Skipping headers check.'
   exit 0
 fi
 
-if has CentOS-8 $NODE_LABELS; then
+if has CentOS $NODE_LABELS; then
   export PKG_CONFIG_PATH=/usr/local/lib64/pkgconfig
 fi
 
 CXX=${CXX:-g++}
 STD=-std=c++14
-CXXFLAGS="-O2 -Wall -Wno-unneeded-internal-declaration -Wno-unused-const-variable $(pkg-config --cflags libndn-cxx $PROJ)"
-INCLUDEDIR="$(pkg-config --variable=includedir $PROJ)"/$PROJ
+CXXFLAGS="-O2 -Wall -Wno-unneeded-internal-declaration -Wno-unused-const-variable $(pkg-config --cflags libndn-cxx $PCFILE)"
+INCLUDEDIR="$(pkg-config --variable=includedir $PCFILE)"/$PROJ
 
 echo "Using: $CXX $STD $CXXFLAGS"
 
diff --git a/wscript b/wscript
index 270ac19..4253101 100644
--- a/wscript
+++ b/wscript
@@ -39,7 +39,12 @@
     conf.env.WITH_EXAMPLES = conf.options.with_examples
     conf.env.WITH_TESTS = conf.options.with_tests
 
-    conf.find_program('dot', var='DOT', mandatory=False)
+    conf.find_program('dot', mandatory=False)
+
+    # Prefer pkgconf if it's installed, because it gives more correct results
+    # on Fedora/CentOS/RHEL/etc. See https://bugzilla.redhat.com/show_bug.cgi?id=1953348
+    # Store the result in env.PKGCONFIG, which is the variable used inside check_cfg()
+    conf.find_program(['pkgconf', 'pkg-config'], var='PKGCONFIG')
 
     pkg_config_path = os.environ.get('PKG_CONFIG_PATH', f'{conf.env.LIBDIR}/pkgconfig')
     conf.check_cfg(package='libndn-cxx', args=['libndn-cxx >= 0.8.0', '--cflags', '--libs'],